70064331381 has 36 divisors (see below), whose sum is σ = 112320985504. Its totient is φ = 42050899440.

The previous prime is 70064331377. The next prime is 70064331397. The reversal of 70064331381 is 18313346007.

70064331381 is a `hidden beast` number, since 7 + 0 + 0 + 643 + 3 + 1 + 3 + 8 + 1 = 666.

It is not a de Polignac number, because 70064331381 - 2² = 70064331377 is a prime.

It is a super-2 number, since 2×70064331381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70064331331) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 200155 + ... + 424488.

Almost surely, 2^70064331381 is an apocalyptic number.

It is an amenable number.

70064331381 is a deficient number, since it is larger than the sum of its proper divisors (42256654123).

70064331381 is a wasteful number, since it uses less digits than its factorization.

70064331381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624774 (or 624760 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

Adding to 70064331381 its reverse (18313346007), we get a palindrome (88377677388).

The spelling of 70064331381 in words is "seventy billion, sixty-four million, three hundred thirty-one thousand, three hundred eighty-one".